1-24 of 26 Books

The green bug and its enemies
By Hunter, Samuel John,Pressley A. Glenn
The Russian wheat aphid
The Russian wheat aphid
By Wayne K. Olson

The new science, weaponless defense
By Frank S. Lewis

The spring grain-aphis or "green bug"
By F. M. Webster

Preventing greenbug outbreaks
By Kenneth J. Starks
Feeding and multiplication of three cereal aphid species and their effect on yield of winter wheat
Feeding and multiplication of three cereal aphid species and their effect on yield of winter wheat
By P. H. Vereijken
Economic impact of the Russian wheat aphid in the western United States, 1991-92
Economic impact of the Russian wheat aphid in the western United States, 1991-92
By Russian Wheat Aphid Task Force
Economic impact of the Russian wheat aphid in the western United States, 1992-1993
Economic impact of the Russian wheat aphid in the western United States, 1992-1993
By Great Plains Agricultural Council. Russian Wheat Aphid Task Force
Economic impact of the Russian wheat aphid in the western United States, 1988-1989
Economic impact of the Russian wheat aphid in the western United States, 1988-1989
By Great Plains Agricultural Council. Russian Wheat Aphid Investigative Committee
Economic impact of the greenbug in the western United States, 1992-1993
Economic impact of the greenbug in the western United States, 1992-1993
By Great Plains Agricultural Council. Russian Wheat Aphid Task Force
Greenbug resistance levels in commercial grain sorghum hybrids in the seedling stage
Greenbug resistance levels in commercial grain sorghum hybrids in the seedling stage
By Jac Forby Morgan
The so-called "green bug" and other grain aphids in Minnesota in 1907
The so-called "green bug" and other grain aphids in Minnesota in 1907
By F. L. Washburn
The spring grain-aphis or so-called "green bug." (Toxoptera graminum Rond.)
The spring grain-aphis or so-called "green bug." (Toxoptera graminum Rond.)
By F. M. Webster,United States. Department of Agriculture. National Agricultural Library.,United States. Bureau of Entomology
The predacious Coccinellidae associated with the wheat aphid, Schizaphis graminum (Rond.) in the Orange Free State
The predacious Coccinellidae associated with the wheat aphid, Schizaphis graminum (Rond.) in the Orange Free State
By Hubert Dick Brown

The history of Florence from the domination of the Medici to the fall of the republic, 1434-1531
By F.-T Perrens
Special report of the state entomologist of Minnesota to the governor
Special report of the state entomologist of Minnesota to the governor
By Minnesota. State Entomologist.

The spring grain-aphis or so-called "green bug."
By F. M. Webster
The green bug and its enemies
The green bug and its enemies
By S. J. Hunter
Entomological experiments
Entomological experiments
By F. M. Webster
Investigation of distribution and natural enemies of the greenbeg Schizaphis graminum Rond. in Yugoslavia
Investigation of distribution and natural enemies of the greenbeg Schizaphis graminum Rond. in Yugoslavia
By Nadežda Mitić-Mužina
Biology studies of Macrosiphum avenae (Fabr.), Acyrthosiphon dirhodum (Walker), and Rhopalosiphum padi (L.) on Gramineae in western Oregon
Biology studies of Macrosiphum avenae (Fabr.), Acyrthosiphon dirhodum (Walker), and Rhopalosiphum padi (L.) on Gramineae in western Oregon
By Gerald L. Greene